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MAXIGAS Nitrogen supply for brewing

ENGINEERING YOUR SUCCESS.

Reduced oxidation for improved taste and quality MAXIGAS from Parker domnick hunter generates high-grade nitrogen gas from compressed air and is a cost effective alternative to other gas sources. There are no on-going costs such as refills, order processing or delivery charges. MAXIGAS gives brewers increased control over flowrates with production downtime being minimised due to the permanent availability of an on-demand nitrogen supply.

There are various nitrogen gas applications during brewing, some of which are outlined here: Blanketing of ingredients Stored ingredients such as hops, flaked maize, malt and other grains are susceptible to damage from ambient air. Nitrogen’s inert properties provide an effective blanket against aerobic spoilage and humidity. A constant supply of low pressure nitrogen gas is required, steadily refilling the headspace of storage tanks as the gas disperses.

Reduced oxidation Beer is quickly oxidised when exposed to air, if quality is to be maintained it needs to be constantly protected. The headspace of tanks can be filled with a protective layer of nitrogen gas to prevent air ingress; a gas delivery system will maintain constant pressure as the temperature and level inside the tank fluctuates.

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Keg cleaning and filling High pressure nitrogen gas is an effective purging method that enables brewers to reduce water consumption. Nitrogen assisted filling increases process speed, protects beer from oxidation, and results in substantially reduced beer losses.

Why nitrogen? Carbon dioxide is commonly used for blanketing as many breweries can recover the gas from fermentation. However, this must be purified to remove flavour taints. Nitrogen may be considered advantageous for two reasons: it is less soluble than carbon dioxide and the flexibility of a nitrogen gas generator means that it can cater for large fluctuations in demand. Whether the gas is produced on-site or bought in, it is recommended to pass it through a sterilising filter to remove any microorganisms that could cause spoilage of the beer.

Purging Purging

Pressure transfer

Equipment and pipelines are equally subject to oxygen pick-up, purging with nitrogen will reduce oxygen and limit bacterial growth.

Nitrogen gas is fast replacing carbon dioxide as a method of providing motive force when discharging beer from storage tanks to filtration.

Mixing

This is because excess carbon dioxide can affect taste and increase product wastage due to fobbing. Nitrogen delivered at high pressure is less likely to affect carbonation.

Nitrogen gas, which has very low solubility forms bubbles in liquid that provide effective mixing of lager / ale yeasts and beer in the brewing tank. The bubbles quickly rise to the surface and are dissipated without affecting taste, appearance or aroma. This form of mixing can also be less production intensive than mechanical devices.

Filter integrity testing Nitrogen gas can be used to test membrane filters without affecting sterility.

Bottling Packaging Purging bottles, cans and kegs with nitrogen gas helps to reduce oxidation after packaging and extends shelf-life. Nitrogen gas can also be used to dry bottles after rinsing.

Dispensing

Inconsistent gas mixture

Consistent gas mixture

Dispensing systems The right gas mixture ensures that every single pint of beer pulled from the keg is of the highest quality. Bar owners get a more efficient operation and less waste with customers getting a better looking and tasting pint. The right carbon dioxide and nitrogen gas mix can be easily achieved with a compact Mixed Gas Dispense unit from Parker domnick hunter. Designed for the retail market, the unit connected to CO2 cylinders produces the perfect gas mixture ratio.

Mixed Gas Dispense Unit

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Clarification Filtration and purification solutions In addition to nitrogen generation, Parker domnick hunter offers brewers a total filtration and purification solution from microbiological stabilisation to physical microbiological stabilisation. This helps to ensure international standards and consumer expectations are achieved.

The range includes: • Clarification and trap filtration for applications that demand absolute particle retention • Sheet and lenticular filters for clarification and physical microbiological stabilisation • Long-life filters with high holding capacity that will withstand long-term steam exposure • Easy to use integrity testing equipment • CO2 purification systems • Sterile gas, vent and steam filters • Mixed gas dispense systems • Fridge and desiccant dryers for compressed air refinement • Advanced membranes for cold microbiological stabilisation prior to packaging

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We no longer need to worry about nitrogen supply; flow and pressure are simply not an issue now.

”

Peter Mosley Head Brewer, Porterhouse Brewery, Ireland

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“

We are making huge savings thanks to our Parker domnick hunter nitrogen generator which has enabled us to reduce CO2 usage. Helmut Sauerhammer Master Brewer, Pyraser Beer, Germany

”

Why MAXIGAS? MAXIGAS is a cost effective alternative to other nitrogen gas sources, with no on-going costs such as refills, order processing or delivery charges.

MAXIGAS It is an effective gas delivery system for applications that require high flow rates and pressure levels. MAXIGAS gives manufacturers increased

control over flow rates and requires minimal maintenance. It can also bring valuable space saving advantages.

MAXIGAS has many advantages over traditional nitrogen supplies including: • Enhanced safety without the need to store or handle high-pressure cylinders • Reduced downtime owing to an on-demand supply • Cost savings following payback of up to 90% • Food grade nitrogen at consistent flow, pressure and purity • Compact space saving design • Flexible modular design • Very low cost of ownership • No need for expensive civil works prior to installation

Nitrogen supply on-demand

• Proven reliability

How it works

• Purities up to 10ppm as standard

MAXIGAS operates on the Pressure Swing Adsorption (PSA) principle to produce a continuous stream of nitrogen gas from compressed air.

• Runs off a smaller compressor for even greater energy savings • Obtains outlet pressures up to 12 bar without a booster

Pairs of extruded aluminium columns are filled with carbon molecular sieve (CMS). Pre-treated compressed air enters the bottom of the ‘on-line’ column and flows up through the CMS. Oxygen and other trace gases are preferentially adsorbed by the CMS, allowing nitrogen to pass through. After a pre-set time the on-line column automatically switches to regenerative mode, venting contaminants from the CMS.

MAXIGAS120

Carbon molecular sieve

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MAXIGAS Nitrogen Gas Generators The cost-effective, reliable and safe solution for medium to large nitrogen requirements.

Product Selection Performance data is based on 7 bar g (100 psi g) air inlet pressure and 20°C - 25°C (66°F - 77°F) ambient temperature. Consult Parker for performance under other specific conditions. Nitrogen flow rate m3/hr vs Purity (Oxygen Content) Model MAXIGAS104

MAXIGAS106

MAXIGAS108

MAXIGAS110

MAXIGAS112

MAXIGAS116

MAXIGAS120

Outlet Pressure

Unit

10ppm

50ppm

100ppm

250ppm

500ppm

0.1%

0.5%

1.0%

2.0%

3.0%

4.0%

5.0%

2

3.8

5.5

7.1

8.6

9

14.1

17.8

22

25.8

29

32.2

1.2

2.2

3.2

4.2

5

5.3

8.3

10.5

12.9

15.2

17.1

19.0

3

5.7

8.3

10.7

13

13.4

21.2

26.6

32.8

38.7

43.5

48.3

1.8

3.3

4.9

6.3

7.6

7.9

12.5

15.7

19.3

22.8

25.6

28.4

4

7.6

11

14.3

17.3

18

28.3

35.5

43.8

51.6

58

64.4

m3/hr cfm m3/hr cfm m3/hr cfm m3/hr cfm m3/hr

2.3

4.5

6.4

8.4

10.2

10.6

16.7

20.9

25.8

30.4

34.1

37.9

5

9.5

13.8

17.8

21.6

22.4

35.3

44.4

54.7

64.5

72.5

80.4

2.9

5.6

8.1

10.5

12.7

13.2

20.8

26.1

32.2

38.0

42.7

47.3

6

11.3

16.5

21.4

25.9

26.8

42.4

53.3

65.7

77.4

87.1

96.5

cfm

3.5

6.7

9.7

12.6

15.2

15.8

25

31.4

38.7

45.6

51.3

56.8

m3/hr

7.9

14.4

20.9

27.1

32.8

34

53.7

67.5

83.2

98.1

110.3

122.3 72.0

cfm

4.6

8.5

12.3

15.9

19.3

20.0

31.6

39.7

49

57.7

64.9

m3/hr

9.8

17.4

25.3

32.8

39.7

41.2

65

81.7

100.7

118.7

133.5

148

cfm

5.8

10.2

14.9

19.3

23.4

24.2

38.3

48.1

59.3

69.9

78.6

87.1

bar g

5.5

6.1

6.1

6.1

6.1

6.1

6.0

5.9

5.8

5.7

5.7

5.6

psi g

80

88

88

88

88

88

87

86

84

83

83

81

m3 reference standard = 20°C, 1013 millibar(a), 0% relative water vapour pressure.

Inlet Parameters

Electrical Parameters Supply Voltage

ISO 8573-1:2010 Class 2.2.2 (2.2.1 with high oil vapour content)

Inlet Air Quality Inlet Air Pressure Range

6 - 15 bar g 87 - 217 psi g

Port Connections Air Inlet

5 - 50 °C 41 - 122 °F

Humidity

50% @ 40°C (80% MAX ≤ 31°C)

IP Rating

IP20 / NEMA 1

Altitude

G1” G1/2” G1/2”

N2 Inlet from Buffer N2 Outlet

< 80 dB (A)

Weights and Dimensions

5

G1”

N2 Outlet to Buffer